题目内容：

is because English is useful______.
A.why we study it hard B.that we study it hard
C.what we study hard D.which we study hard

优质解答

选Bit is because English is useful that we study it hardit's .that 是个强调句 强调it's 后面的内容 所以这句话翻译的时候 可以吧把it's that句型还原为 we study it hard because English is useful...